Guest guest Posted February 1, 2003 Report Share Posted February 1, 2003 > I have been reading at the following site about a Ceramic THR > > http://www.mcghealthcare.org/orthopaedic/Ceramic_Hip_Evaluation/cerami > c_hip_evaluation.html > > I am wondering if anyone else has researched this at all...and why > were ceramics not used for resurfacing. Small diameter heads for THRs evolved many years ago in the early Charnley hips, as the best way to minimize volumetric wear of the poly acetabular cups and the associated osteolysis. Ceramics have the advanatge of producing still less debris than metal articulations,and debris which is notably well tolerated and inert. They're also smoother and considered to be more " wettable " and therefore easier to lubricate, for a given diameter, than other articulations. They are not reccommended for heavier patients, due to continuing concerns abou the risk of shattering, and regretably can not be produced in sufficiently thin moldings to be applied to resurfacing, as yet. --Griz I am curious because they > speak about the ceramic THR on this site as hopefully being a one > time surgery without need for multiple revisions. Apparently it is a > newer form of ceramic. I still think a resurfacing is optimal for > me, because I want my femural head...but I don't truly understand how > the ceramic is better. They say it is better because it can be > lubricated by your body so there is less wear, but this is the same > adcantage as resurfacing. I am not sure where i am going with this. > Hows this > > Do M/M THR's have the same benifit as this Ceramic THR? > If not then why. > > and if Ceramic is better than metal for a THR then why not the same > for a resurfacing? > > I hope the answer is not the size of the Ball. Because I truly don't > understand why they dont use larger heads on THR's anyway to help > prevent dislocation. > > Any thoughts? > > Tho > > Im on post 2900 by the way and I keep randomly trying to search on > topics such as ceramic in the archive...but frankly the archives are > not easy to search at all. Easier to read post by post. Quote Link to comment Share on other sites More sharing options...
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